1 . 和y轴相切且和半圆
内切的动圆圆心的轨迹方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390586a962ecd65825c235d1388da847.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 一圆形纸片的圆心为点
,点
是圆内异于点
的一个定点,点
是圆周上一动点,把纸片折叠使点
与点
重合,然后抹平纸片,折痕
与
交于点
,当点
运动时,点
的轨迹是______ .(只需填曲线的名称)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解题方法
3 . 已知过椭圆
的焦点
,
的两条互相垂直的直线的交点在椭圆内部(不含边界),则此椭圆离心率的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 直线与
轴交于点
,与
轴交于点
,且直线与椭圆
相切,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7a6fd6d651ae341154c2e40928d628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03eb5be422dc9f0f01736b0f2b08a3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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名校
解题方法
5 . 若函数
的增区间为
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86d1031f633b59864df19bbfe3e4979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-03-14更新
|
1438次组卷
|
3卷引用:第七届高二试题(B卷)-“枫叶新希望杯”全国数学大赛真题解析(高中版)
解题方法
6 . 已知
,若“
且
”为假命题,则( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbe72097ad6825425b7e7406d3e4acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.![]() ![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知双曲线的渐近线方程为
,则此双曲线的离心率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e229870f126b31e37965bc0c58667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
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8 .
与
的左支交于
两点,直线
过
及
中点,则
在
轴上截距范围为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc8350b12974ffc8d06fce36d158f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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解题方法
9 .
中,
为动点,B、C为定点,
,
,且满足条件![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e1b373d34c5ab8ef86032e294177c7.png)
,则点
的轨迹方程是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed70ed5ca241eec53926415751710d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e1b373d34c5ab8ef86032e294177c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd48d1dc8fe67496f0b9d2be048f471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() ![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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解题方法
10 .
的最大值为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0469fdbb3c7e63cfe2cc82c20bc56f.png)
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